New write-up by @avlidienbrunn: CSP: bypassing form-action with reflected XSS http://labs.detectify.com/2016/04/04/csp-bypassing-form-action-with-reflected-xss/ …pic.twitter.com/lW4uKFgc4E
Web security fiddler. Bug bounty bastard. CTF with @HackingForSoju.
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New write-up by @avlidienbrunn: CSP: bypassing form-action with reflected XSS http://labs.detectify.com/2016/04/04/csp-bypassing-form-action-with-reflected-xss/ …pic.twitter.com/lW4uKFgc4E
@detectify @avlidienbrunn: The demo page doesn't actually set `form-action` (which doesn't fall back to `default-src`). /cc @0x6D6172696F
@detectify: https://output.jsbin.com/nacoziwagu doesn't work, for example. @avlidienbrunn @0x6D6172696F
@mikewest @detectify @0x6D6172696F oops, set it up a bit fast. The point is that it bypasses form-action 'self'. Will update, thanks.
@avlidienbrunn: That's not really a "bypass", right? Still, an excellent example for the value of Referrer Policy. @detectify @0x6D6172696F
@mikewest @detectify @0x6D6172696F well. Same amount of user interaction, form values sent cross-domain. What's the definition of a bypass?
@avlidienbrunn: Eh. You're right, it's a bypass. :) It's narrower than the original claims, but totally valid. @detectify @0x6D6172696F
@mikewest @detectify @0x6D6172696F agreed, my bad
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